<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
	<style>
		.outer {
			height: 300px;
			width: 300px;
			background-color: aqua;
			display: flex;
			/* flex-wrap: wrap; */
			justify-content: space-between;
		}

		.item {
			height: 80px;
			width: 80px;
			background-color: blue;
		}
		.item:nth-of-type(2) {
			align-self: flex-end;
		}
	</style>
</head>
<body>
	<div class="outer">
		<div class="item"></div>
		<div class="item"></div>
	</div>
</body>
</html>